采用线性加减速伺服系统的快速准确定位方法  

RAPID AND ACCURATE POSITIONING METHOD OF CNC SYSTEM

作　　者：郭新贵[1] 李从心[1] 阮雪榆[1] 

机构地区：[1]上海交通大学塑性成形工程系,上海200030

出　　处：《机械工程学报》2003年第7期74-78,共5页Journal of Mechanical Engineering

基　　金：高等学校博士学科点专项科研基金(98024834)

摘　　要：定位精度与定位时间是CNC系统中十分重要的性能参数,加减速算法特别是减速算法对它们有着十分重要的影响。详细地分析了传统减速算法定位时间长的原因,在此基础上提出了改进算法,并进行了仿真和试验,结果表明在保证相同定位精度条件下采用该方法可大大缩短定位时间和提高机床加工效率。The positioning accuracy and positioning time of CNC system are main performance criteria for industrial applications. The acceleration/deceleration modes, especially deceleration mode, have an important effect on them. Some problems in the conventional linear deceleration algorithm are analyzed. Then an improved linear acceleration /deceleration is introduced. In this algorithm, the deceleration point is predicted exactly, and then the deceleration point error is compensated for at higher feedrates. Compared with that of conventional linear acceleration and deceleration algorithm, the system performance is improved significantly. It is confirmed by many simulations and experiments.

关 键 词：定位精度 定位时间 线性加减速伺服系统 数控系统 数控机床 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TP273[自动化与计算机技术—检测技术与自动化装置]